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Posted to hdfs-user@hadoop.apache.org by James Litton <ja...@chacha.com> on 2010/09/22 21:28:24 UTC

Recovery of datanode with dfs.replication = 1

Hello,

 I recently got tasked with recovering a node from an HDFS cluster, but the problem is there was no replication of the data configured. I still have access to the disk on which the data is stored.

 My current plan is:
1. bring up a new machine
2. mount the disk on that machine
3. reconfigure the slaves config to include that node
4. ???
5. have access to the data

 Is this possible? What steps will I need to take to ensure that the data on the new node is recognized and included in the data set?

Thank you,
 James